Hi,
Pretty good progress in 4 weeks.
Is a set of measurements schedule at this stage of the construction to check:
- Floating ceiling & floor: control vibration isolation curve is close to target
- Walls: decoupling isolation curve is close to target
- HVAC: duct branch insertion loss is close to target
- HVAC: be ready to exchange standard fans with higher efficiency low speed ones
Before finishing work would even start, it makes sense to verify that baseline isolation target can be reached room by room by intermediate step measurements.
The 1st point of all acoustic construction is to build 'silence' by means of acoustic & vibrations isolation.
This is what makes the quality of a studio in particular mastering the quality of silence inside each room ... then great room acoustics.
At this stage, errors can be found and fixed at low cost. Not later ...
It can only take 1 oversized screw or 2 touching corners of normally independent steel studs to drop a room wall isolation by 10dB or more...
Even if contractors are doing a great job ... rushing at one stage of construction execution can result into unforeseen errors.
A good low frequency sweep (20-100Hz) with a powered 18" subwoofer can always reveal unexpected rattling inside the primary decoupling structure.
Just suggestion from previous projects...
Good luck!
